social network that allows you to take photos and videos, apply filters to them , and distribute them through your service and a number of other social networks  . Instagram allowed you to take square-shaped photos – like Polaroid , Kodak Instamatic instant cameras and 6 × 6 medium-format cameras (most mobile photo applications uses an aspect ratio of 3: 2), but from August 26, 2015 Instagram introduced the ability to add photos and videos with landscape and portrait orientation, without cropping to a square shape.
The application is compatible with iPhone , iPad and iPod Touch devices on iOS 4.3 and higher, as well as phones on Android 2.2 and higher with support for OpenGL ES 2. It is distributed through the App Store and Google Play, respectively  . On November 21, 2013 Instagram Beta for Windows Phone 8  appeared. The purchase price amounted to $ 300 million in cash and 23 million shares of the company, which totaled $ 1 billion  .
According to experts, Instagram for 2017 received about $ 2.8 billion from global advertising.
In 2018, the number of registered users is 1.1 billion people.
According to a survey conducted by the VTsIOM in December 2017 , 14% of Russian Internet users use their Instagram account every day / almost every day.
The development of the Instagram application began in San Francisco when Kevin Systromand Mike Krieger decided to reorient their Burbn project to mobile photos   . The app appears in the app store App Store of AppleOctober 6, 2010  .
Shortly after the release of the app, Josh Riedel joined the team as a community manager. In November 2010, Shane Sweeney joined the team as an engineer, and in August 2011, Jessica Zollman as an IT community evangelist    .
In September 2011, version 2.0 of the application was released, in which live filters, instant tilt change, four new filters, high-resolution photographs, optional borders, one-click rotation and an updated icon  appeared .
On April 9, 2012, Facebook announced the purchase of Instagram’s mobile photo app for $ 1 billion. Facebook will transfer $ 300 million to its photo service owners and transfer about 23 million of its shares. In addition, the social network pledged in the event of a transaction failure to pay Instagram a penalty of $ 200 million 
At the end of 2012, Instagram announced a change to the terms of the user agreement. Among the innovations, the point was to appear that Instagram gains the right to use photos uploaded by its users, including for advertising purposes  . This has sparked sharp criticism in society, both among Instagram members and copyright lawyers. Many Instagram members have deleted their accounts. According to the analytical service AppData, Instagram may have lost up to 25% of users – its daily traffic decreased from 16 million to 12 million people  . Faced with criticism and protests, the service management reformulated the controversial clause of the user agreement, saying that their intentions were misunderstood .
In April 2013, Instagram announced the launch of its new development, which will allow users to mark themselves, their friends, places of interest, and well-known brands in photographs. It will also provide the opportunity to configure the system of notifications of new marks, including making them private  .
In June 2013, Instagram announced the possibility of recording video in a length of 15 seconds.
On November 21, 2013 Instagram version for Windows Phone 8 was released .
In March 2015, Instagram announced the possibility for brands to create photo galleries and send users to their site using the “Learn more” button  . Currently, the company has announced a new functionality for brands: the Buy Now and Install Now buttons  .
In July 2015, Instagram photos began to upload in the best quality – 1080×1080 pixels (instead of the previous 640×640 pixels)  .
In August 2015, Instagram added a landscape and portrait format to the traditional square format for pictures and videos  .
Starting February 8, 2016, the owners of several Instagram pages can be in them simultaneously. Owners of devices based on iOS (7.15) and Android got the opportunity to use multiple accounts at the same time, without leaving any of them. For this option to start working, you need to add an additional account in the profile settings and click on the username  .
On March 16, 2016, Instagram informed its subscribers about a change in the appearance of updates in the feed. Now it will be formed not on the basis of chronology, but based on the interests of the user. According to the company’s official blog post, the first time it is planned to leave all user publications, only their order will be changed. Innovations will not be introduced immediately, but gradually, over several months  .
In March 2016, another innovation was also announced – a change in the duration of downloaded video content. Video duration will now be increased four times – from 15 to 60 seconds. This decision was justified by a sharp increase in user interest in this format and the number of published videos in recent times.
In May 2016, Instagram announced a design change that became more monochrome and concise. Icons and inscriptions now look different: the black color in their design has changed to blue. The logo acquired a gradient effect  .
In August 2016, an update was released for the app called Instagram Stories, which allows you to create photos and 10-second videos with text, emoji and other handwritten notes. The key feature of such posts is that, unlike regular posts in the feed, they are deleted exactly after 24 hours.
In February 2017, Instagram launched a new feature that will fit up to ten photos and videos in one post. Multimedia content will be displayed in the form of a “carousel” scrolled by swipes.
On December 28, 2017, an update appeared on Instagram, as a result of which the recommended entries began to appear in the main stream.
On June 20, 2018, the IGTV (InstaGram TV) function  appeared on Instagram, which is designed for long vertical videos. You can watch videos from there either in a separate application or inside Instagram. Unlike Instagram, IGTV videos are not limited to just one minute, they can last up to an hour. People will also be able to comment on the video and share it with friends. 
On August 1, 2018, Instagram announced a tool that will remind users how much time they spend in the application. This parameter will be indicated in the settings as “Your activity”. Users will be able to control the time on the social network by disabling push notifications or setting the daily activity rate on Instagram  .
On November 22, 2018, the developers of the social network Instagram began testing the new interface of the mobile application  .
On March 13, 2019, Facebook had the biggest glitch in history, lasting about 10 hours. During this time, Facebook, Instagram, Messenger and WhatsApp were not available to many countries around the world. Problems arose because of a “server configuration change”  .
On March 19, 2019, the social network began testing a new function of making online purchases through its application – Checkout on Instagram.
By December 2010, Instagram had one million registered users  . In June 2011, it was already five million  . By September this number doubled  , and by March 2012 the number of users reached almost 30 million  . By the end of February 2013, Instagram announced 100 million active users  . And at the end of March 2014, Mark Zuckerbergannounced the registration of a 200 millionth user  .
In July 2011, Instagram announced 100 million uploaded photos. In August of that year, their number reached 150 million   . By November 2013, users had already downloaded 16 billion snapshots  .
On January 31, 2019, Facebook head Mark Zuckerberg shared information that 500 million users per day post on Instagram Stories.
On February 2, 2011, it was announced that Instagram had raised $ 7 million from various investors, including Benchmark Capital, Jack Dorsey , Chris Sacc (through LOWERCASE Capital) and Adam D’Angelo.
The popularity of the application provoked the emergence of many developments, one way or another connected with Instagram. As a separate area of such development, one can single out projects of various devices designed to work with Instagram.
The first of these devices is the Instagram Socialmatic Camera, a camera designed in the style of the Instagram icon. The camera allows you to immediately process the photo and send it to Instagram, as well as instantly print the photo. Thus, device developers want to transfer Instagram to the real world, inviting users to share photos not only on a social network, but also in life  . The first model of the product of the ADR and Polaroid studios has two cameras (front and rear), a touch screen, a mini-printer with 4 cartridges, an optical zoom, a 3Gmodule, and also are equipped with WiFi and Bluetooth  .
The second device is a special Instacube digital photo frame, which is also made in the style of the Instagram icon and can display photos from the selected Instagram account on its screen.
In April 2014, the first vending machine under the Boft brand was installed in Moscow, allowing you to print photos from Instagram. On June 23, 2014, it was patented  .
There are also services that allow you to print photos of Instagram users on various subjects – magnets, pillows, t-shirts, canvases, etc. Since Instagram has [now ? ] there are no statistics on accounts, in mid-2015, services began to appear  , providing such an opportunity. With their help, you can compare and analyze the main indicators of accounts.Instagram “freezes” the pages of the dead. “If you meet an account that belongs to the deceased, you can tell us about it to set a memorable status” (Instagram reference). For installation, a death confirmation is required – a link to an obituary or news article. Memorable status is a special option that prevents anyone else from entering the profile. You can’t remove your marks from photos of the deceased, delete likes and so on. The account seems to be preserved, while disappearing from the “Interesting” section. But it looks like ordinary. Only relatives have the right to delete the deceased’s account. They can send a request for removal by attaching the birth certificate of the deceased, a death certificate and proof that they are the heir or legal representative of the person.